Machine for wrapping cakes or the like



Jan. 2, 19.34- BALDWIN 1,942,017

MACHINE FOR WRAPPING CAKES OR THE LIKE Filed April 15, 1933 6 Sheets-Sheet l lllllll m lun Elm 84 In r 78 E L25 Fm gm 105106 H2 no u as 104 l- I'll i im

I INVENTOR FRANK BALDWIN,

a 5' ZRNEY Jan. 2, 1934- F, BALDWlN 1,942,017

MACHINE FOR WRAPPING CAKES OR THE LIKE Filed April 15, 1953 6 Sheets-Sheet 2 Q 7 V l O M 21 INVENTOR FRANK BALowm,

B3 M ZORNEY- Jan, 2, 1934.

F. BALDWlN MACHINE FOR WRAPPING CAKES OR THE LIKE 6 Sheets-Sheet 3 Filed April 15, 1933,

izf' 2 512 35 INVENTOR FRANK BALDWIN,

ORNEY Jan. 2, 1934. F. BALDWIN MACHINE FOR WRAPPING CAKES OR THE LIKE INVENTOR Filed April 15, 1953 Jan. 2, 1934. v F. BALDWIN 1,942,017

MACHINE FOR WRAPPING CAKES OR THE LIKE Filed April 15, 1935 6 sheets-sheet 5 44' INVENTOR FRANK BALDWIN,

BY (w 95 (v 4. 5. Ill-11m "will? A EY Jan. 2, 1934. F. BALDWIN MACHINE FOR WRAPPING CAKES OR THE LIKE Filed April 15. 1953 6 Sheets-Sheet 6 5 1 6. 1. 1 2 H 8 7 0 9 1 08 1| 1 3 0 1| 1 n H II S K 5 4 00 WW o 4 8 9 .4 83 8 n 2.1 5 I t 59 6 0 3 38 3 54 i a 5 4 w. o 0 0 4 1| 0 A 2 n 3 1| 4 H 9.... 0 9 0 DJ 41 1 1 6 H INVENTOR FRANK BALDWIN,

NEY

so urell.

Fntented Jul.- 2, 1934 MAC IFQR. lPENG QAKES @R rm Fronds Baldwin, Yonkers, N. if.

Application April i5, @333. Serinl No. scene @lnims. (Gl. 93-2) This invention relctes to as low, for wrapping cslres or the like.

An object oi the invention is to provide e. niochine of this character that is simple end rugged 5 in construction and economics! to manufacture.

Another object is the provision of e machine of this chsrecter that is positive in operation.

Another object of the invention is the provision of a machine of this character with means 1 go for heating the wrapper to facilitate wrapping and sealing.

Another object of the invention is the provision of s, neschine of this character that is sole to operete.

Another object is the provision or" means for positioning the article to be wrapped on the me.- chine.

Another object is the provision of moons for positioning the wrepper.

the: objects end edvsntoges oi the invention will bE-ill pert pointed out and in port obvious from the dwcriptlon thereof to follow taken in connection with the accompanying drawings in whicli- Figure 1 is a front elevotion oi my hnproved machine, parts being shown in section.

Figure 2 is a. side elevation thereof.

Figure 3 is e. detsil elevation of e. limit switch used in my improved machine.

Figure 4 is s top plan view oi my machine, one hell oi the cover piste being removed to show the underlying ports.

Figure 5 is e fragmentary sectional view taken on the plane indicoted by the line 5-5 of Figure d and showing in detail the sealing rnech.

Fi -mire d is e. irenterv plan view of one of the operet levers and the motivating corn.

Figure 7 is s fragmentary sectional view on e, large scale she the mechm for produc- 49 has the side end top folds.

Figure t is a view or to Fe 7 but showing the side folds completed and the top fold portly completed.

Figure 9 is o -;;entnrv plan view showing in detail the top fol mechenism.

figure lo is e. fragmentary sectionsl view o a large sccle showing the mechanism for pro-.

rinsing the end tucm or lolds st the'side of the wrapper, sold mesh w losing in inoperative 5; position.

Figure ll is a. View similar to Figure ll) but showing the mec m inoperative position.

Figure it lee rental-y sectionsl View on the plane indicated by the line 12-12 of Fig Figure 13 is a. detail view partly in section or o form of heating device used with my niece.

Figure 14 is a fragmentary cross sectional view, showing the position of the ports after the completion of the end sealing or last folding operotion.

Figure 15 is a perspective view of e coke positioned on e wrapper preparatory to folding.

Figures 16, 17 and 1e are perspective views il= lustroting the several stages of the fol operetions.

Figure 19 is a. schematic drawing showing on electrical circuit for my improved machine.

Referring to the various views of the drew= ingsin detail in which similar reference char acters refer to similar parts throughout, the Home work of my improved machine consists substantially of upright side posts so connected by suitable transverse bars El. Al shell 22 may be mounted on upright hers 23 at the top tor holding the wrapping materiel or the orticle to be wrapped or both as desired.

Floors 2% mounted on the transverse hers 21 support the various hcreter described. 1

The article to be wrapped, such as o cslre 25, or the like, is hand fed to the machine by the operator. The operator then turns the elech'ic switch 26 which closes the electric circuit starting the motor 27 which through the bolt 28 end pulley 29 drives the shaft 36, which in bymeens of e sprocket wheel 31 end chain 32 drives a. large sprocket wheel 33 fixed to o, shalt 3d. The shaft 34 drives the various sts mount the cams which motivate the various folding, sealing and positioning mechanisms.

The cake 25 to be wrapped is placed on e fixed supporting plate 35 mounted on posts 36 on the upper floor 2% (see Fig. 7). cm, y connected to each side of piste 35 by moons of mm: 37 is a. plate 38, the upper surfaces oi which plates 35 and 33 are flush sfiording e supporting surface for e. wrapper 39, whlcn'is preferably n sheet of psreiiined or waxed paper, but of course ony other suitable wrapping peper may be used.

Mechanism for first p loll lot

which lever 42 is connected to a bracket 43 fastened to the underside of the side folding plate 38. The levers 41 are directly above and in aligned engagement with cams 45 which are fixed to shafts 46 passing across the front and rear of the machine and mounted in suitable bearings 44 on the'floor 24 at the front and rear of the machine. The shafts 46 are operatively connected to the shaft 34 by means of the intermeshing gears 47 on the ends of the shafts 34 and 46 as will be seen from Figure 4.

Mechanism for second folds The second folds produced are the folds 39" on the top of the cake and are produced by folding the top side free edges of the wrapper inwardly and dowrr-over the top of the cake, said folds being in overlapping relationship as shown in Figure 16. The mechanism for these folds (see Figs-7 and 8) comprises a folding member or jaw48 consisting of spaced plates 49 connected care of differences in the height of the cake 25 to be Wrapped. Pivotally connected to each bolt mounted between the brackets 40 and to one side of each lever 41 is a double armed lever 53 comprising a lower arm 54 and a spaced upper arm 55 having an upwardly extending offset portion 56, said arms 54 and 55 being connected at their inner ends by means of a bolt 57. Positioned directly above and in aligned engagement with each upper arm 55 is an upright lever 58 having its upper end pivotally connected to the folding member 48 by means of a bracket 59. The lever 58 is in sliding engagement with the upright lever 42 by means of a bolt 60 and slot 61. The bottom free end of the lever 58 is in alignment with the offset portion 56 of the double armed lever 53 and is adapted to be engaged thereby. The lower arm 54 of each double armed lever 53 is positioned above and in aligned engagement with cams 62 fixed on the shafts 46. Each cam 62 has an operating cam face only about substantially half the size of the cam 45 engaging the lever 41.

An electric heating member such as a resistance coil or any suitable design of electric heater may be mounted between the spaced plates 49 if desired.

Mechanism for third folds The third folds produced are the folds or tucks 39" which are folded inwardly from the sides of the projecting wrapper portions at each end of the cake, such folds being shown in folded position in Figure 17. The mechanism for tucking these projecting side ends in is shown in Figures 10 and 11. Mounted on brackets 63 on the front andrear of the upper floor 24 are levers 64, which levers are in sliding and pivotal engagement with said brackets by means of a bolt 65 and slot 66 in the end of the lever. Pivotally connected to the inner end of each lever 64 is another lever 67. One end of this lever 67 is pivotally connected to an upright post 68 secured to the floor 24 and its other end is free and mounts a triangular shaped tucker blade or plate 69. It will be understood of course that this plate 69 may be of any shape desired. Each slotted lever is positioned directly above a cam 70 mounted on each shaft 46 and is adapted to be engaged by said cam. Fixed to the lever 64 is a small plate 71 provided with an edge curved to conform to the shape of the working face of the cam 70. A spiral spring 72 has one end fastened to the bracket 63 and its other end to the lever 64 near its inner end to effect movement of the lever in one direction.

Mechanism for fourth folds The fourthfolds are the folds 73 and 74 which are folded downwardly and upwardly from the top and bottom ends respectively of the projecting wrapper portions at each end of the cake, said folds being shown in unfolded position in Figure 17 and in folded position in Figure 18. The mechanism for producing these folds is shown in Figures 1 and 14. Pivotally connected to a bracket 75 on an upright post .23 on each side of the upper floor 24 is a horizontal lever 77 and pivotally connected to the outer end of each lever 77 is an elongated curved upright member 78.-

Pivotally mounted on a bolt 79 between the upright posts 23 on each side of said floor 24 is a lever member 80. Depending from the inner end of each lever 80 and in sliding engagement therewith by means of a slot 81 and bolt 82 is a plate 83. A weight 84 depends from the outerend of each lever 80. The upper end of long lever 78 is connected to the lever 80 at a point inside of its pivotal connection to the upright post 23. Each plate 83 is guided in its up and down movements by means of a guiding frame 85 mounted on the inner end of a bracket 86 mounted on each upright post.

Pivotally connected to each lever 77 adjacent its inner end by means of a bolt 87 and extending inwardly of said lever is another lever 88. The inner free end of each lever 88 is disposed belowand supports a plate 89 which slides freely between uprights 90 mounted on the upper floor 24 on each side of the center of the floor. Each plate 89 is guided in its up and down movements by a guide frame 91.

Each plate 83 and 89 may be heated by an electric heating member 92 (see Figs. 11 and 13) including a resistance 93 in circuit with the circuit operating the machine. The heating element 92 may be secured to the frame 91 by means of a strap 94 and suitably connected to conductors (not shown).

Weights 95 are suspended from the lower end of each plate 89 to pull it down by gravity.

Each lever 77 is positioned directly above and in aligned engagement with cams 76 fixed to shaft 34 and to a shaft' 96 disposed at right angles to the shafts 46 and operatively connected to said shafts 46 by means of intermeshing gears 97 interposed therebetween as will be seen from Figure 4. Each lever 88 is positioned directly above and in aligned engagement with a cam 98 fixed'to each of shafts 34 and 96 and positioned alongside of the cams 76.

Mechanism for sealing end folds The final operation is the sealing and pressing of the end folds together to the position shown in Figure 18. The mechanism for this sealing and pressing operation is shown in Figures 1, 5 and 14. Mounted pivotally on a bracket or arm 99 fixed to the upright posts 23 is a lever 100 and lit minor? plvotally connected to the lever 100 is one end 08 a link member 101. Pivotally connected to the other end of link 101 is the short arm 102 of a bell crank member. This hell crank member is pivotelly connected to lugs 103 on posts 90. The long arm 104 of the bell crank member carries a presser plate 105 at its outer free end, which plate 105 is adapted to move slightly reletive to the long arm. A spiral spring 106 is disposed between the plate 105 and the outer end or the long arm on a holt 107 to permit yielding adjustment or the plates 105 relative to the end oi the coke to compensate for various shspes and Sims of cakes. Each lever its is positioned directly stove and in aligned engagement with coins roe fixed to the shafts 3d and 96. These coins res have a shorter working face than the earns "56 end have their faces positioned at a dif- I ferent angle.

Coke positioning mechanism Mechanism is provided for initially positionthe colic on the plate in proper position for wrapping. The mechanism for this positioning is shown in Figures 1, 5 and it. Pivotelly mounted on e bracket its listed to each upright.

-. sitioned at the side edge of the plate 35. The lever 110 has n slotted upper end which is in engagement with a. pin 113 on the bar 111. The outer end of the her 111 passes through a bracket 7 11d mounted on esch post 23 and encircling this oil outer end of the her 111 is a spirol spring 115, one end of which is anchored to the outer end of the bracket 114: and its other end to the bar 111 as indicated at 116. This spring 115 eilects movement of the bar 111 in one direction. The

lower free end of each lever 110 is in alignment with the movement of cams 11"! on shafts or and to.

Operation of the serious mechanisms in using the machine, the wrapper 359 is positioned fiat on the coho supporting plate 35, side folding pistes 38 and top folding plates or jaws to. Upstanding clips or fingers 118" may he provided on one oi the folding plates 38 to prevent the end edge of the wrapper from passing under or hetween the spaced plates to of the adlecent folding member is when the wrapper is ied or placed on the plotes. The cake is pieced on the wrapper over the plate 35 between the fingers 112. The switch 26 is then turned closing the electric circuit and starting the motor which by means of the belt 28,-chein 32 and intermediate wheels drives the shaft to. This shaft 34 drives the shorts to and 98 by means of the intermeshing gears d? and 9'1.

Rotation of shsits 16 turns come with their long working faces, which cams immediately besin to push levers t1 and 42 upwardly, the levers d2 pushing the side plates 38 upwardly into the position shown in Fig. 8. Rotation of said shafts 46 also turns cams 62 which are in engagement with the double levers 53, but sold cams 62 having a shorter working face then the earns 45 engage the double lever 53 alittle later then the cams 45 engage the levers s1. These cams 62 move the double levers 53 upwsrdly so that the upper arms 55 of sold levers 53 push the upright levers 58 upwardly and continued movement of said cams 62 makes the free lower ends of said upright levers 58 rlde'upwardly over the oflset portions 56 or 45 and 62 on the other shaft 46 at the front with I the result that movement of the levers 41 and 58' by the latter cams is delayed suficiently to permit the top fold to be completed by the memher to connected to-the rear shaft 46 before the top told is made by the member 48 coimected to the front shaft to as shown in Figure 8, so that the top folds will overlap as shown in Figure 16. As aforesaid, these members 48 may he electrisally heated in order to host the wrapper et this joint in order to produce a seal, ii Simultaneously with the movement of the levers 41 end 58, the rotation oi "h and Q6 turns earns 11'? which. forces lower free ends oi the levers 11o inwardly med its upper end outwardly which outward movement carries the her ill. with its finger 11.2. Ellis outward move: merit of the horlll is opposed by the spring 115 which normally tends to push the her inwardly. By the time the side plates as reach theirupwerd operative folding position such as shown in Fig. 8, the bars 111 with their positioning fingers 112 are moved out of the way, clue to the action of the came 11*? whichare shaped and positioned on the shsfts to effect this result.

Simultaneously with the movement of the i6 and the coinsto end 62, the cams to turn, but sold cams 70 are mounted on she-its "is with their working faces at on angle to the working traces of cams 45 and 62 so that said cams l0 do not engage the levers do until after the levers 41 end 58; have started on their upward course. i

The turning of the cams to and their engagement 1 with the levers do by means of the plates 71 push% the upright levers 6'7 upwerdlyehd inwardly so that the plates or blades 69 carried by said levers tuck in the side edges which project beyond the opposite ends of the wrapper ,(see

e shafts 3 1 till Figs. 16 and 17) to the position as shown inFigure 1']. Engagement of the working faces of cams ill with the curved surfaces of plates '71 prevents the rocking of the upright levers 67. Inward folding movement of the levers 6'? is guided by means of guide lugs 12o.

Rotation of the shafts 3t and 96 turns the owns 76 which being in engagement with levers '77 coins having their faces shorter than the cams 7t and positioned at an angle thereto do not move the levers 88 until after movement of the levers 77 start. The inner ends of levers 88 move upwardly and force the lower plates so upwardly across the ends of the cake to moire the bottom end fold 14. Because of the delayed movement the lever 88 and the short upward stroke of the plate 89, the downwardly moving upmr plate- 83 and the lower upwardly moving plate 89 slide across the end of the cake at the some time so thatvthe end folds 73 end 7e are made simulta- Before the upper and lower sliding plates 83 and so slide across the ends of the echo,

the spiral springs 72 will have pulled the levers 67 with their plates 69 away from the ends of the cake, as cam 70 moves away from the plate 71.

Rotation of the shafts 34 and 96 also turns cams 108, which having their working faces mounted at an angle to the faces of the cams 76 and 98 engage the levers after the start of the movements of the levers 77 and 88, and move said levers 100 upwardly which movement forces the levers 100 upwardly rocking the bell crank levers on their pivots and forcing the long arms 104 with their plates inwardly against the end folds of the wrapper to the position shown in Figure 14. The delayed movement of the levers 100 brings the long arms 104 with their presser plates 105 against the ends of the cake after the arrival of the sliding and folding plates 83 and 89 so that said presser plates 105 tend to press said sliding plates against the folds. The upper and lower sliding plates 83 and 89 being heated by the heating elements 92 tend to melt the paraffin or wax on the paper at the end folds so that pressure of the plates 105 tend to seal the folds at this point.

My invention contemplates one complete movement of the machine at a time so as to wrap one cake at a time. This is accomplished by placing a limit switch or cut-out switch in the same circuit with the motor 27, which may be in circuit with the house current. This limit switch as shown in Figure 3 comprises a rotating member 118' formed of insulating material and carrying a band 118' of metal or other conducting material. This rotatable member is fixed on shaft 34 and is disposed between brushes 119 mounted on brackets 120 electrically connected to the conductors 121. The insulating material is so disposed relative to the brushes that after one complete cycle of operations the insulating portion comes in contact with one of the brushes when the circuit is broken and the various mechanisms return to their inoperative positions. The side plates 38 and associated levers for producing the side folds and top folds fall back to inoperative position by gravity. The plates 69 and associated levers for producing the side end tucks return to inoperative positionby means of the spiral spring 72. The upper and lower sliding plates 83 and 89 and associated levers for producing the upper and lower end folds return to inoperative positions by means of the weights 84 and 95, respectively.

Suitable covers 122-having necessary openings for the various protruding parts and movable members may be hinged to the front and rear upper transverse bars of the frame work in order to protect the various mechanisms, only one of said covers being shown in Figure 4.

While I have illustrated and described the preferred embodiment of my invention, it will be understood that various changes might be made in details without departing from the principle of my invention and I desire to be limited only by the scope of the appended claims.

I claim:

1. In a machine for wrapping cakes or the like, a supporting plate for the cake; means adapted -to position the cake on its support, said means comprising finger members disposed on opposite sides of the plate and slidable rods mounting said finger members; automatic means to move said positioning means away from the supporting plate, said moving means comprising rotatable shafts, cams on the shafts, levers in engagement with said cams and movable thereby and a slot and stud connection between each lever and rod; and automatic means to return the finger members to the supporting plate including a spiral spring surrounding each rod and having one end anchored in said rod and its other end in a stationary part of the machine whereby adjustment is effected.

2. In a machine for wrapping cakes or the like, mechanism for positioning the cake on its supporting plate, comprising finger members disposed on opposite sides of said plate and slidable rods mounting said finger members; mechanism for folding the wrapper up and around the sides of the cake; mechanism for folding in overlapped relationship the top free edges of the wrapper over the top of the cake; and mechanism for folding the free ends of the wrapper projecting on opposite ends of the cake.

3. In a machine for wrapping cakes or the like, a support for the cake; mechanism for folding the wrapper up and around the sides of the cake; mechanism for folding the top and bottom free ends of the wrapper projecting on opposite ends of the cake, comprising upper and lower horizontally disposed levers, a lever disposed between each of the upper and lower levers and pivotally connected thereto, a plate movable vertically downward by said upper lever, another .lever pivotally connected to said lower lever, a

and means for guiding the vertical movements of said plates including a guide frame mounted on the frame of the machine.

4. In a machine for wrapping cakes. or the like, a support for the cake; mechanism for folding the wrapper up and around the sides of the cake; mechanism for folding the top free edges of the wrapper over the top of the cake; mechanism for folding the wrapper at its projecting top and bottom free ends on opposite ends of the cake, comprising upper and lower horizontally disposed levers, a lever disposed between each of the upper and lower levers and pivotally connected thereto, a plate movable vertically downward by said upper lever, another lever pivotally connected to said lower lever, a plate movable vertically upward by said latter lower lever, a cam under each of said lower levers to motivate the same and means to rock the cams; mechanism for folding the side free ends of the wrapper projecting beyond the ends of the cake, comprising levers movable to and from the ends of the cake, blades carried by said levers and adapted to tuck in the side free ends of the wrapper, cams for motivating said levers and means for rocking said cams; means for guiding the vertical movements of said plates, including guide frames; and means for guiding the movements of said levers and blades for tucking in said side free ends of the wrapper including guide lugs. A

5. In a machine for wrapping cakes or the like, in combination, a support for the cake; mechanism for folding the wrapper up and around the sides of the cake, including levers, plates on said levers adapted to engage the wrapper, cams for motivating said levers, and shafts for rocking said cams; mechanism for folding in overlapped relationship the topfree edges of the wrapper over the top of the cake, including levers, plates on said levers adapted to engage the top free edges of the wrapper, cams for motivating said levers, disposed on the aforesaid shafts so as to engage the latter levers subsequent to the start manor? of movement of the first named levers; mechanism for folding the top and bottom free ends of the wrapper projecting on opposite ends of the cake, including levers, plates on said levers adapted to engage the top and bottom free ends of the wrapper cams and shafts therefor; mechanism .for folding the side free ends of the wrapper projecting on opposite ends of the cake, including levers, blades on said levers adapted to engage the side free edges of the wrapper, cams for motivating said levers disposed on the first named shafts at an angle to the cams motivating the side and top edges of the wrapper whereby the folds of the side free ends are made subsequent to the side and top folds; the cams for motivating the levers of the mechanism for making the folds at the top and bottom free ends of the wrapper being M t on their shafts to delay movement of the levers until after movement of the mechanism for the side end folds; means for returning said side end folding mechto initial position including a spiral spring; mechanism for sealing the folded ends of the wrapper, including levers, plates carried by the levers and adapted to impinge against the end folds, cams mounted on the shaft mounting the cams of the top and bottom free end folding mechanism, and disposed thereon at an angle to the aforesaid cams whereby movement of the sealing mec is delayed until after movement of all of the aforesaid mac; and an electric motor operatively connected to said shaf for driving the same.

ililii 

